The plant air system has a large condensation tank for collecting moisture from several dryers that drain into it. Every few months, build-up in its drain line causes a blockage. Sometimes, the weight of the condensate will flush this out, sometimes it won’t. When it won’t, the condensate backs up into the dryers and causes big problems.
Electrical Troubleshooting Quiz - July 12, 2016
Install a suitable drain valve that’s solenoid-operated and outfit the problem tank with a level switch float port.